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Find Foundation, basement or crawlspace waterproofing / encapsulation pros in Germantown

Avatar for Once & Done Waterproofing Solutions, LLC

Once & Done Waterproofing Solutions, LLC

4.92(
53
)
Approved Pro

Once & Done Waterproofing Solutions, LLC

4.92(
53
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

At Once & Done Waterproofing Solutions, LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.

"Once & Done did a great job!"

Hugh L on August 2024

At Once & Done Waterproofing Solutions, LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.

"Once & Done did a great job!"

Hugh L on August 2024


Avatar for JES Foundation Repair

JES Foundation Repair

4.51(
706
)
Approved Pro

JES Foundation Repair

4.51(
706
)
Approved Pro
Super Service Award
Customers say: Super punctual
180 local quotes requested
33 years of experience

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"Worst experience ever. Unresponsive, unwilling to complete the work, no communication among the different teams which came to the house to do the work, lying every time I talked with person who gave me the estimate and signed the contract with, lying by a supervisor, and more ? Horrible company."

George K on January 2026

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"Worst experience ever. Unresponsive, unwilling to complete the work, no communication among the different teams which came to the house to do the work, lying every time I talked with person who gave me the estimate and signed the contract with, lying by a supervisor, and more ? Horrible company."

George K on January 2026


"Absolute professionals. Efficient and well Organized. James the owner is an absolute gem to deal with. I would recommend Always Waterproofing to anyone dealing with a leaky basement."

James H on February 2026

Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!

"Absolute professionals. Efficient and well Organized. James the owner is an absolute gem to deal with. I would recommend Always Waterproofing to anyone dealing with a leaky basement."

James H on February 2026


Avatar for JES Foundation Repair

JES Foundation Repair

4.76(
924
)
Approved Pro

JES Foundation Repair

4.76(
924
)
Approved Pro
Customers say: Quality work
168 local quotes requested
33 years of experience

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"We had foundation repair done recently in bitter cold weather. Joe Autry, Larry Robinson, Dante' Gladden and William Lawrence worked continuously to get the job done before the snowstorm hit. These guys were unbelievable; they had to hand dig our property to get the job done. We are so impressed by their workmanship, work ethics and dedication to ensuring the job was done correctly."

Eleanor C on February 2026

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"We had foundation repair done recently in bitter cold weather. Joe Autry, Larry Robinson, Dante' Gladden and William Lawrence worked continuously to get the job done before the snowstorm hit. These guys were unbelievable; they had to hand dig our property to get the job done. We are so impressed by their workmanship, work ethics and dedication to ensuring the job was done correctly."

Eleanor C on February 2026


Avatar for Allmaster Home Services

Allmaster Home Services

4.85(
31
)
Approved Pro

Allmaster Home Services

4.85(
31
)
Approved Pro
Customers say: Quality work
100 local quotes requested
16 years of experience

John has been in the home improvement industry for more than 40 years. He has spent more than 16 years training and consulting in the waterproofing and structural repair industry. He has also testified as an expert witness in both Maryland and Virginia. His honest approach and competitive pricing has gained many satisfied customers over the years.

"Have used allmaster on multiple projects and will continue to do so. Excellent work"

Adam M on April 2024

John has been in the home improvement industry for more than 40 years. He has spent more than 16 years training and consulting in the waterproofing and structural repair industry. He has also testified as an expert witness in both Maryland and Virginia. His honest approach and competitive pricing has gained many satisfied customers over the years.

"Have used allmaster on multiple projects and will continue to do so. Excellent work"

Adam M on April 2024


Avatar for Armour Construction LLC

Armour Construction LLC

4.09(
81
)
Approved Pro

Armour Construction LLC

4.09(
81
)
Approved Pro
Customers say: True professional
26 years of experience
Free onsite estimate

Ready to upgrade your home? Armour Construction brings 26 years of experience to homeowners across the Washington, DC area. We offer comprehensive home remodeling services, specializing in kitchen & bathroom remodels and basement finishing, as well as waterproofing, additions, roofing, siding, windows, flooring, and drywall repair. Our team of skilled professionals is committed to quality craftsmanship and fair, competitive pricing. We manage the details so you can simply enjoy the results—like walking into a newly remodeled kitchen or fully finished basement that feels warm, elegant, and built to last. If you’re planning a project, we’d be happy to discuss your ideas and provide a clear, straightforward estimate. Give us a call today at (410) 489-6004 or (301) 570-8041 to schedule your free in-home estimate with a licensed contractor.

"They were fast "

Marina D on December 2025

Ready to upgrade your home? Armour Construction brings 26 years of experience to homeowners across the Washington, DC area. We offer comprehensive home remodeling services, specializing in kitchen & bathroom remodels and basement finishing, as well as waterproofing, additions, roofing, siding, windows, flooring, and drywall repair. Our team of skilled professionals is committed to quality craftsmanship and fair, competitive pricing. We manage the details so you can simply enjoy the results—like walking into a newly remodeled kitchen or fully finished basement that feels warm, elegant, and built to last. If you’re planning a project, we’d be happy to discuss your ideas and provide a clear, straightforward estimate. Give us a call today at (410) 489-6004 or (301) 570-8041 to schedule your free in-home estimate with a licensed contractor.

"They were fast "

Marina D on December 2025


Avatar for NV Waterproofing & Foundation Repair

NV Waterproofing & Foundation Repair

4.55(
172
)
Approved Pro

NV Waterproofing & Foundation Repair

4.55(
172
)
Approved Pro
Customers say: Quality work
29 local quotes requested
40 years of experience

Established in 1986, NV Waterproofing provides expert solutions for below-grade moisture control, prevention, concrete repair, and foundation repair in the greater Washington, D.C. area. Call us at (703)690-3889 to schedule your appointment. Our certified applicators use the industry's most effective and eco-friendly waterproofing, drainage, concrete, and foundation repair products, offering a one-stop solution for your needs. Trusted by hundreds of homeowners, contractors, and builders, our reputation is built on word-of-mouth referrals. We pride ourselves on excellent customer service and stand behind our work. As members of Supportworks and Contractor Nation, our goal is to create satisfied customers. Service areas include D.C., Virginia (Fairfax, Loudoun, Prince William, Fauquier, Arlington, Alexandria, Stafford, Spotsylvania), and Maryland (Montgomery, Frederick, Prince George, Howard, St. Mary’s).

"Mark and his crew were terrific. Professional all the way. Pleasure working with them. Will use them again."

Jack P on October 2025

Established in 1986, NV Waterproofing provides expert solutions for below-grade moisture control, prevention, concrete repair, and foundation repair in the greater Washington, D.C. area. Call us at (703)690-3889 to schedule your appointment. Our certified applicators use the industry's most effective and eco-friendly waterproofing, drainage, concrete, and foundation repair products, offering a one-stop solution for your needs. Trusted by hundreds of homeowners, contractors, and builders, our reputation is built on word-of-mouth referrals. We pride ourselves on excellent customer service and stand behind our work. As members of Supportworks and Contractor Nation, our goal is to create satisfied customers. Service areas include D.C., Virginia (Fairfax, Loudoun, Prince William, Fauquier, Arlington, Alexandria, Stafford, Spotsylvania), and Maryland (Montgomery, Frederick, Prince George, Howard, St. Mary’s).

"Mark and his crew were terrific. Professional all the way. Pleasure working with them. Will use them again."

Jack P on October 2025


Avatar for Basement Gurus, LLC

Basement Gurus, LLC

4.85(
157
)
Approved Pro

Basement Gurus, LLC

4.85(
157
)
Approved Pro
Super Service Award
Customers say: Quality work
1042 local quotes requested
16 years of experience

Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!

"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "

Don I on January 2026

Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!

"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "

Don I on January 2026


All Aspects Waterproofing, LLC

4.80(
151
)
Approved Pro

All Aspects Waterproofing, LLC

4.80(
151
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
23 local quotes requested

All Aspects Waterproofing provides quality work at competitive pricing throughout the Washington/Baltimore Metropolitan area with convenient offices located in Maryland and Virginia. MARYLAND Office 8735 Bollman Place # H Savage, Maryland 20763. VIRGINIA Office 11325 Random Hills Road Suite 360-A103 Fairfax, Virginia 22030. Call 866-999-3110 to Schedule your FREE Inspection and Estimate. Everyone at All Aspects Waterproofing looks forward to exceeding your expectations!

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023

All Aspects Waterproofing provides quality work at competitive pricing throughout the Washington/Baltimore Metropolitan area with convenient offices located in Maryland and Virginia. MARYLAND Office 8735 Bollman Place # H Savage, Maryland 20763. VIRGINIA Office 11325 Random Hills Road Suite 360-A103 Fairfax, Virginia 22030. Call 866-999-3110 to Schedule your FREE Inspection and Estimate. Everyone at All Aspects Waterproofing looks forward to exceeding your expectations!

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023


Avatar for Drainage and Erosion Solutions

Drainage and Erosion Solutions

4.18(
300
)
Approved Pro

Drainage and Erosion Solutions

4.18(
300
)
Approved Pro
Customers say: Quality work
23 years of experience
Free onsite estimate

Drainage & Erosion Solutions (DES) is an award-winning design-build firm specializing in diagnosing and resolving drainage and erosion issues for residential and commercial properties. With both engineering and contracting divisions, we deliver professionally engineered solutions that are as functional as they are aesthetically pleasing. Our team is composed of dedicated, full-time professionals known for their technical expertise, attention to detail, and commitment to exceptional customer service. All consultations, assessments, and installations are performed by licensed experts—including soils engineers and landscape and drainage system designers—who bring decades of combined experience in design and construction. Clients trust DES for our reliability and results, leading to a strong referral-based business and consistently high rankings on contractor-rating platforms.

"I highly recommend DES! I arranged a consultation after a home inspection report indicated that there was moisture in our basement walls. I was worried that costly mitigation efforts would be required. A friend who had previously used DES for a basement water problem highly recommend them, telling us that they were an honest company that only does what is necessary to solve a problem. Happily, Mark Fine from DES inspected both our basement and our exterior grounds and reported that there was no indication of cracks in the foundation or water intrusion, and that no work needed to be done. It is so refreshing to have a company that doesn't try to sell expensive services when they are not necessary!"

Brian E on October 2025

Drainage & Erosion Solutions (DES) is an award-winning design-build firm specializing in diagnosing and resolving drainage and erosion issues for residential and commercial properties. With both engineering and contracting divisions, we deliver professionally engineered solutions that are as functional as they are aesthetically pleasing. Our team is composed of dedicated, full-time professionals known for their technical expertise, attention to detail, and commitment to exceptional customer service. All consultations, assessments, and installations are performed by licensed experts—including soils engineers and landscape and drainage system designers—who bring decades of combined experience in design and construction. Clients trust DES for our reliability and results, leading to a strong referral-based business and consistently high rankings on contractor-rating platforms.

"I highly recommend DES! I arranged a consultation after a home inspection report indicated that there was moisture in our basement walls. I was worried that costly mitigation efforts would be required. A friend who had previously used DES for a basement water problem highly recommend them, telling us that they were an honest company that only does what is necessary to solve a problem. Happily, Mark Fine from DES inspected both our basement and our exterior grounds and reported that there was no indication of cracks in the foundation or water intrusion, and that no work needed to be done. It is so refreshing to have a company that doesn't try to sell expensive services when they are not necessary!"

Brian E on October 2025

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FAQs for foundation, basement or crawlspace waterproofing / encapsulation projects in Germantown, MD

The most affordable way to waterproof your basement is with interior methods like waterproof paint, costing between $1 and $8 per square foot, or silicate concrete sealers priced at $4 to $6 per square foot. However, these solutions are only suitable for certain issues. If your basement moisture is due to more serious problems like a cracked foundation, you'll need more extensive (and costly) repairs.

Absolutely! Waterproofing your basement is a smart investment that can increase your home's value. By keeping your basement dry and free of moisture problems, you protect your home's structural integrity and make it more appealing to potential buyers. Plus, taking proactive measures now can prevent costly water damage repairs down the line.

The time required to waterproof a basement depends on the selected method. Some approaches to interior waterproofing, like paint or sealant, can be completed within a day. Installing new drains or weeping tiles will need at least two to three days of labor. Any forms of exterior waterproofing that require you to excavate land will require an additional three days of work to prepare the ground.

Yes, basement waterproofing can significantly increase your home's value. A dry, leak-free basement is a strong selling point for potential buyers, enhancing your property's desirability and market price. Investing in professional waterproofing not only protects your home's structural integrity but also ensures a healthier living environment by preventing mold and mildew growth.

Waterproofing both the interior and exterior of your basement offers the best protection against moisture. Exterior waterproofing stops water from penetrating your foundation, while interior methods manage any moisture that does enter. If you must choose one, exterior waterproofing is generally more effective, as it prevents water from reaching your home's interior in the first place.

The Germantown, MD homeowners’ guide to foundation, basement or crawlspace waterproofing / encapsulations

From average costs to expert advice, get all the answers you need to get your job done.